Touch display panel

ABSTRACT

The touch display panel of the disclosure includes a first substrate, a first display electrode, a spacer and a first touch electrode. The first display electrode is disposed on the first substrate. The spacer is disposed on the first substrate. The first touch electrode is disposed on the first substrate, wherein the first touch electrode has a first bridge part, and at least a portion of the first bridge part is overlapped with the spacer from a top view.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation application of and claims thepriority benefit of U.S. application Ser. No. 15/717,959, filed on Sep.28, 2017, now allowed, which claims the priority benefit of Chinaapplication serial no. 201610896301.6, filed on Oct. 14, 2016. Theentirety of each of the above-mentioned patent applications is herebyincorporated by reference herein and made a part of this specification.

TECHNICAL FIELD

The disclosure relates to a display panel, and particularly relates to atouch display panel.

BACKGROUND

Touch display panels may be divided into out-cell type touch displaypanels, on-cell type touch display panels, and in-cell type touchdisplay panels. Among the three types, in-cell type touch display panelshave a thinner thickness. Besides, a touch electrode of the in-cell typetouch display panel is disposed in or on an encapsulation layer, so thetouch electrode may not be damaged by scratching easily. Therefore, thein-cell type touch display panels have become a key aspect in thedevelopment of the industry.

An in-cell type touch display panel includes a first substrate, a secondsubstrate, an organic light emitting diode (OLED) device layer, and atouch electrode. The OLED device layer and the touch electrode isdisposed between the first substrate and the second substrate. The touchelectrode includes a plurality of sensing parts and a bridge partelectrically connected between the sensing parts. Generally speaking, toreduce a resistance of the touch electrode, the bridge part is usuallyformed of a material having a low resistance rate. However, a materialhaving a low resistance rate usually shields light. The bridge parthaving a low resistance rate may block a light emitting area of the OLEDdevice layer, thus affecting the brightness of the in-cell type touchdisplay panel.

SUMMARY

The disclosure provides a touch display panel having preferable touchand display properties.

The touch display panel of the disclosure includes a first substrate, afirst display electrode, a spacer and a first touch electrode. The firstdisplay electrode is disposed on the first substrate. The spacer isdisposed on the first substrate. The first touch electrode is disposedon the first substrate, wherein the first touch electrode has a firstbridge part, and at least a portion of the first bridge part isoverlapped with the spacer from a top view.

Based on the above, the first bridge part adopted in the touch displaypanel according to an embodiment of the disclosure is electricallyconnected with two adjacent first sensing parts. The first sensing partsand the first bridge part are serially connected to form the first touchelectrode. The first bridge part has a low resistance rate. Therefore,the first touch electrode has a low resistance, so the touch performanceof the touch display panel is able to be facilitated. More importantly,the first bridge part is disposed on the spacer (or protrusion) outsidethe light emitting area. Therefore, the first bridge part does notoverly affect the brightness of the touch display panel, and the touchdisplay panel may exhibit preferable touch and display properties.

In order to make the aforementioned features and advantages of thedisclosure more comprehensible, embodiments accompanying figures aredescribed in detail below.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a furtherunderstanding of the disclosure, and are incorporated in and constitutea part of this specification. The drawings illustrate embodiments of thedisclosure and, together with the description, serve to explain theprinciples of the disclosure.

FIG. 1 is a schematic cross-sectional view illustrating a touch displaypanel according to an embodiment of the disclosure.

FIG. 2 is a schematic top view illustrating a touch display panelaccording to an embodiment of the disclosure.

FIG. 3 is a schematic cross-sectional view illustrating a touch displaypanel according to another embodiment of the disclosure.

FIG. 4 is a schematic top view illustrating a touch display panelaccording to another embodiment of the disclosure.

FIG. 5 is a schematic cross-sectional view illustrating a touch displaypanel according to still another embodiment of the disclosure.

FIG. 6 is a schematic top view illustrating a touch display panelaccording to still another embodiment of the disclosure.

FIG. 7 is a schematic cross-sectional view illustrating a touch displaypanel according to yet another embodiment of the disclosure.

FIG. 8 is a schematic top view illustrating a touch display panelaccording to yet another embodiment of the disclosure.

FIG. 9 is a schematic top view illustrating a touch display panelaccording to an embodiment of the disclosure.

FIG. 10 is a schematic top view illustrating a touch display panelaccording to another embodiment of the disclosure.

FIG. 11 is a schematic top view illustrating a touch display panelaccording to still another embodiment of the disclosure.

FIG. 12 is a schematic top view illustrating a touch display panelaccording to yet another embodiment of the disclosure.

FIG. 13 is a schematic top view illustrating a touch display panelaccording to an embodiment of the disclosure.

FIG. 14 is a schematic top view illustrating a touch display panelaccording to another embodiment of the disclosure.

FIG. 15 is a schematic top view illustrating a touch display panelaccording to still another embodiment of the disclosure.

FIG. 16 is a schematic top view illustrating a touch display panelaccording to yet another embodiment of the disclosure.

FIG. 17 is a schematic top view illustrating a touch display panelaccording to an embodiment of the disclosure.

DETAILED DESCRIPTION OF DISCLOSED EMBODIMENTS

Reference will now be made in detail to the present preferredembodiments of the disclosure, examples of which are illustrated in theaccompanying drawings. Wherever possible, the same reference numbers areused in the drawings and the description to refer to the same or likeparts.

FIG. 1 is a schematic cross-sectional view illustrating a touch displaypanel according to an embodiment of the disclosure. FIG. 2 is aschematic top view illustrating a touch display panel according to anembodiment of the disclosure. Specifically, FIG. 1 corresponds to across-sectional line A-A′ of FIG. 2. Referring to FIGS. 1 and 2, a touchdisplay panel 100 includes a first substrate 110, an organic lightemitting diode (OLED) device layer 120, a spacer 130, a first touchelectrode 140, a second touch electrode 150, and a second substrate 160.The spacer 130 may also be referred to as a protrusion. The secondsubstrate 160 is disposed to be opposite to the first substrate 110. TheOLED device layer 120, the spacer (or protrusion) 130, the first touchelectrode 140, and the second touch electrode 150 are located betweenthe first substrate 110 and the second substrate 160. In thisembodiment, the spacer (or protrusion) 130 is able to maintain a cellgap g between the first substrate 110 and the second substrate 160.However, the disclosure is not limited thereto. In this embodiment, thesecond substrate 160 is a stack structure formed by a polarizer 162 anda barrier film 164, for example. The barrier film 164 is located betweenthe polarizer 162 and the OLED device layer 120. The barrier film 162may serve to buffer or to enable elastic recovery, so as to prevent afirst bridge part 142 of the first touch electrode 140 or a secondbridge part 152 of the second touch electrode 150 from being damagedwhen contacting the second substrate 160. The polarizer 162 allows alight beam L emitted by the OLED device layer 120 to exhibit aconsistent polarization state, thereby enabling more comfortable viewingexperience with the touch display panel 100. However, the disclosure isnot limited thereto. In other embodiments, the second substrate 160 mayalso be other suitable structures, such as a transparent substrateformed of a single material, an anti-reflection multi-layer structure, aprotection glass including a scratch-resistant material, ascratch-resistant coating, or the like. In this embodiment, a structureof the first substrate 110 may be a substrate formed of a singlematerial. A material of the first substrate 110 may include, forexample, glass, quartz, organic polymer, or an opaque/reflectivematerial (e.g., a conductive material, wafer, ceramics, etc.). However,the disclosure is not limited thereto. In other embodiments, thematerial of the first substrate 110 may also include other suitablematerials, and the structure of the first substrate 110 may also includeother suitable materials, such as an anti-reflection multi-layerstructure, a protection glass including a scratch-resistant material, ascratch-resistant coating, or the like. Besides, in other embodiments,the second substrate may be omitted. For example, if the touch displaypanel 100 is a flexible display or is applied in a flexible display, thepolarizer 162 and/or the barrier film 164 may be directly disposed onthe first substrate 110.

The OLED device layer 120 is disposed on the first substrate 110. TheOLED device layer 120 includes an active device Td, an active device Ts,a first display electrode 122, an insulating layer 124, and an organiclight emitting pattern 126. The active device Td and the active deviceTs are disposed on the first substrate 110. The first display electrode122 is electrically connected with the active device Td. The insulatinglayer 124 covers the active device Td and the active device Ts. Theinsulating layer 124 has an opening 124 a. The opening 124 a exposes thefirst display electrode 122. The organic light emitting pattern 126 isfilled into the opening 124 a of the insulating layer 124, so as to beelectrically connected with the first display electrode 122. The touchdisplay panel 100 further includes a transparent second displayelectrode 170. The second display electrode 170 covers and iselectrically connected to the organic light emitting pattern 126. Inthis embodiment, the touch display panel 100 may optionally include abuffer layer 180. The buffer layer 180 covers the first substrate 110,and the OLED device layer 120 is disposed on the buffer layer 180.However, the disclosure is not limited thereto. In other embodiments,the buffer layer 180 may be omitted in the touch display panel 100, andthe OLED device layer 120 may be directly disposed on the firstsubstrate 110.

In this embodiment, the active device Ts is a selection transistor, forexample, and the active device Td is a driving transistor, for example.The active device Ts has a gate Gs, a channel CHs, a gate insulatinglayer GI disposed between the gate Gs and the channel CHs and a sourceSs and a drain Ds respectively electrically connected to two sides ofthe channel CHs. The active device Td has a gate Gd, a channel CHd, agate insulating layer GI disposed between the gate Gd and the channelCHd and a source Sd and a drain Dd respectively electrically connectedto two sides of the channel CHd. The drain Ds of the active device Ds iselectrically connected with the gate Gd of the active device Td. Morespecifically, the drain Ds of the active device Ts may be disposed on aninsulating layer 128 and filled into an opening 128 a of the insulatinglayer 128, so as to come into electrical contact with the gate Gd of theactive device Td. The source Sd of the active device Td has a systempotential. The drain Dd of the active device Td is electricallyconnected with the first display electrode 122. The second displayelectrode 170 has a reference potential. The active device Ts is able toturn on the active device Td. When the active device Td is turned on, apotential difference is present between the second display electrode 170and the first display electrode 122. Therefore, a driving current flowsthrough the organic light emitting pattern 126, so that the organiclight emitting pattern 126 emits the light beam L, thereby displaying aframe.

Referring to FIG. 2, the OLED device layer 120 has a light emitting area120 a.

Referring to FIGS. 1 and 2, a position of the light emitting area 120 acorresponds to a position of the organic light emitting pattern 126. Asshown in FIG. 2, in this embodiment, the light emitting area 120 a isable to emit the light beams L in various colors, so as to form afull-color frame. For example, the light emitting area 120 a includes alight emitting area 120 a-R, a light emitting area 120 a-G, and a lightemitting area 120-B. The light emitting area 120 a-R is able to emit thelight beam L in red. The light emitting area 120 a-G is able to emit thelight beam L in green. The light emitting area 120 a-B is able to emitthe light beam G in blue. The red, green, and blue light beams L mayform a full-color frame and be mixed to form white light. However, thedisclosure is not limited thereto. The colors and spectrum of the lightbeams L emitted by the light emitting area 120 a may be determined basedon practical needs. It should be noted that, a proportional relationbetween sizes of the light emitting areas 120 a-R, 120 aG, and 120 a_Band a size of the spacer (or protrusion) 130 shown in the drawings ofthe disclosure merely serves as an example, and the disclosure is notlimited to such proportional relation. The proportional relation betweenthe sizes of the light emitting areas 120 a-R, 120 aG, and 120 a_B andthe size of the spacer (or protrusion) 130 may be determined based onpractical needs.

Referring to FIGS. 1 and 2, the spacer (or protrusion) 130 is disposedon the OLED device layer 120 and located outside the light emitting area120 a. In other words, the spacer (or protrusion) 130 is not overlappedwith the organic light emitting pattern 126. The spacer 130 may also bereferred to as a protrusion. In this embodiment, the spacer (orprotrusion) 130 may be disposed on the insulating layer 124. The seconddisplay electrode 170 may cover the spacer (or protrusion) 130, so as toform an electrode protruding part 170 a on the spacer (or protrusion)130. The touch display panel 100 further includes an encapsulation layer190. The encapsulation layer 190 covers the OLED device layer 120 toprevent moisture or oxygen from entering the OLED device layer 120,thereby increasing reliability of the touch display panel 100. In thisembodiment, the encapsulation layer 190 may cover the second displayelectrode 170 and form an encapsulation protruding part 190 a on theelectrode protruding part 170 a. The spacer (or protrusion) 130, theelectrode protruding part 170 a, and the encapsulation protruding part190 a may be stacked to form a protruding structure K. As shown in FIG.1, in this embodiment, the spacer (or protrusion) 130, the seconddisplay electrode 170, and the encapsulation layer 190 are sequentiallystacked on the insulating layer 124. However, the disclosure is notlimited thereto. In other embodiments, the spacer (or protrusion) 130,the second display electrode 170, and the encapsulation layer 190 mayalso be stacked in other suitable sequences. Besides, a shape of thespacer (or protrusion) 130 is not limited to the rectangular shape shownin the figure. In other embodiments, the spacer (or protrusion) 130 mayalso be designed to be in other arbitrary shapes.

Referring to FIGS. 1 and 2, the first touch electrode 140 and the secondtouch electrode 150 are disposed on the OLED device layer 120. The firsttouch electrode 140 has the first bridge part 142 and a plurality offirst sensing parts 144. In addition, the first bridge part 142 iselectrically connected between two adjacent first sensing parts 144. Thesecond touch electrode 150 has the second bridge part 152 and aplurality of second sensing parts 154. In addition, the second bridgepart 152 is electrically connected between two adjacent second sensingparts 154. The first bridge part 142 of the first touch electrode 140 iscrossed with the second bridge part 152 of the second touch electrode150, and the first bridge part 142 of the first touch electrode 140 iselectrically insulated from the second bridge part 152 of the secondtouch electrode 150. The first sensing parts 144 a and the secondsensing parts 154 overlap with the light emitting area 120 a. In thisembodiment, the first touch electrode 140 may be a transmissionelectrode (Tx), and the second touch electrode 150 may be a receptionelectrode (Rx). However, the disclosure is not limited thereto. In otherembodiments, the first touch electrode 140 may also be a receptionelectrode, and the second touch electrode 150 may also be a transmissionelectrode. In this embodiment, the first bridge part 142 may shieldlight, whereas the first sensing parts 144 and the second sensing parts154 may be transparent. However, the disclosure is not limited thereto.

More specifically, in this embodiment, the first sensing parts 144, thesecond sensing parts 154, and the second bridge part 152 may be formedin the same transparent conductive layer. The first sensing parts 144,the second sensing parts 154, and the second bridge part 152 may bedirectly disposed on the encapsulation layer 190. At least a portion ofthe second bridge part 152 is located right above the spacer (orprotrusion) 130 and overlaps with the spacer (or protrusion) 130. Amaterial of the transparent conductive layer includes a metal oxide,such as indium-tin oxide, indium-zinc oxide, aluminum-tin oxide,aluminum-zinc oxide, indium-germanium-zinc oxide, other suitable oxides,or a stack layer of at least two thereof. However, it should beunderstood that the disclosure is not limited thereto. In thisembodiment, the second bridge part 152 may be transparent. However, thedisclosure is not limited thereto.

Referring to FIGS. 1 and 2, the touch display panel 100 further includesan insulating pattern 192. In this embodiment, the insulating pattern192 may cover the second bridge part 152. The first bridge part 142crosses the insulating pattern 192 to electrically connect two adjacentfirst sensing parts 144. It should be noted that at least a portion ofthe first bridge part 142 is disposed on the spacer (or protrusion) 130.At least a portion of the first bridge part 142 overlaps with the spacer(or protrusion) 130. The first bridge part 142 has a low resistancerate. In this embodiment, the first bridge part 142 may shield light. Amaterial of the first bridge part 142 includes a metal, an alloy, or astack layer thereof, for example. However, the disclosure is not limitedthereto. By using the first bridge part 142 having a low resistancerate, an overall resistance of the first touch electrode 140 is able tobe reduced, thereby facilitating the touch performance of the touchdisplay panel 100. More importantly, the first bridge part 142 isdisposed on the spacer (or protrusion) 130 outside the light emittingarea 120 a. Therefore, even if the first bridge part 142 having a lowresistance rate may shield light, the first bridge part 142 does notoverly affect the brightness of the touch display panel 100. Therefore,the touch display panel 100 may exhibit preferable touch and displayproperties. Another advantage of disposing the first bridge part 142 onthe spacer (or protrusion) 130 is that a distance between the firstbridge part 142 and a user F is reduced. Therefore, a touch sensitivityof the touch display panel 100 is able to be facilitated.

Referring to FIG. 2, in this embodiment, the first bridge part 142 maybe formed as a straight line, so as to reduce a resistance of the firstbridge part 142 itself, thereby reducing the overall resistance of thefirst touch electrode 140 and optimizing the touch performance of thetouch display panel 100. An end 142 a of the first bridge part 142 maybe optionally in an arc shape. The arc-shaped end 142 a is able toreduce a chance of point discharge, thereby facilitating the reliabilityof the touch display panel 100. In this embodiment, the first sensingpart 144 and/or the second sensing part 154 may be substantially in arhombus shape. An edge 144 a of a portion of the first sensing part 144and/or an edge 154 a of a portion of the second sensing part 154 may bein an arc shape. Similarly, the arc-shaped edge 144 a of the portionand/or the arc-shaped edge 154 a of the portion are able to reduce thechance of point discharge, thereby facilitating the reliability of thetouch display panel 100. However, the disclosure is not limited thereto.In other embodiments, the first bridge part 142, the first sensing part144, and/or the second sensing part 154 may also be designed in othersuitable shapes. Details will be described in the subsequent paragraphswith reference to other accompanying drawings.

FIG. 3 is a schematic cross-sectional view illustrating a touch displaypanel according to another embodiment of the disclosure. FIG. 4 is aschematic top view illustrating a touch display panel according toanother embodiment of the disclosure. Specifically, FIG. 3 correspondsto a cross-sectional line B-B′ of FIG. 4. Referring to FIGS. 3 and 4, atouch display panel 100A is similar to the touch display panel 100.Therefore, like or corresponding components are referred to with like orcorresponding reference symbols. The touch display panel 100A mainlydiffers from the touch display panel 100 in that a second bridge part152A of the touch display panel 100A is not transparent. The followingdescriptions mainly focus on the difference between the touch displaypanel 100A and the touch display panel 100, and the same orcorresponding parts are referred to the foregoing descriptions.

Referring to FIGS. 3 and 4, the touch display panel 100A includes thefirst substrate 110, the OLED device layer 120, the spacer (orprotrusion) 130, the first touch electrode 140, the second touchelectrode 150, and the second substrate 160. The OLED device layer 120is disposed on the first substrate 110 and has the light emitting area120 a. The spacer (or protrusion) 130 is disposed on the OLED devicelayer 120 and located outside the light emitting area 120 a. The firsttouch electrode 140 and the second touch electrode 150 are disposed onthe OLED device layer 120. The OLED device layer 120, the spacer (orprotrusion) 130, the first touch electrode 140, and the second touchelectrode 150 are located between the first substrate 110 and the secondsubstrate 160. The first touch electrode 140 has the first bridge part142 and the first sensing parts 144. In addition, the first bridge part142 is electrically connected between two adjacent first sensing parts144. The second touch electrode 150 has the second bridge part 152A andthe second sensing parts 154. In addition, the second bridge part 152Ais electrically connected between two adjacent second sensing parts 154.The first bridge part 142 of the first touch electrode 140 is crossedwith the second bridge part 152A of the second touch electrode 150. Inthis embodiment, the first bridge part 142 may shield light, whereas thefirst sensing parts 144 and the second sensing parts 154 may betransparent. However, the disclosure is not limited thereto.

Referring to FIGS. 3 and 4, the first sensing part 144 and the secondsensing part 154 may be formed in the same transparent conductive layer.The first sensing part 144 and the second sensing part 154 may bedirectly disposed on the encapsulation layer 190. Two ends 152 a of thesecond bridge part 152A may respectively cover two adjacent secondsensing parts 154, so as to electrically connect the two adjacent secondsensing parts 154. The insulating pattern 192 covers the second bridgepart 152A. The first bridge part 142 crosses the insulating pattern 192to electrically connect two adjacent first sensing parts 144. In thisembodiment, the second bridge part 152A may shield light. However, thedisclosure is not limited thereto.

It should be noted that, in this embodiment, the first bridge part 142and the second bridge part 152A have low resistance rates. Materials ofthe first bridge part 142 and the second bridge part 152A include ametal, an alloy, or a stack layer thereof, for example. However, thedisclosure is not limited thereto. By using the first bridge part 142and the second bridge part 152A having low resistance rates, theresistances of the first touch electrode 140 and the second touchelectrode 150 are able to be reduced, thereby further facilitating thetouch performance of the touch display panel 100A. More importantly, thefirst bridge part 142 and the second bridge part 152A are disposed onthe spacer (or protrusion) 130 outside the light emitting area 120 a.Therefore, even if the first bridge part 142 and the second bridge part152A may shield light, the first bridge part 142 and the second bridgepart 152A do not overly affect the brightness of the touch display panel100A. Therefore, the touch display panel 100 may exhibit preferabletouch and display properties.

Referring to FIG. 4, in this embodiment, the second bridge part 152A maybe formed as a straight line, so as to reduce a resistance of the secondbridge part 152A itself, thereby reducing the overall resistance of thesecond touch electrode 150 and optimizing the touch performance of thetouch display panel 100A. An end 152 a of the second bridge part 152Amay be optionally in an arc shape. The arc-shaped end 152 a is able toreduce a chance of point discharge, thereby facilitating the reliabilityof the touch display panel 100A. However, the disclosure is not limitedthereto. In other embodiments, the second bridge part 152A may also bedesigned in other suitable shapes. Details will be described in thesubsequent paragraphs with reference to other accompanying drawings.

FIG. 5 is a schematic cross-sectional view illustrating a touch displaypanel according to still another embodiment of the disclosure. FIG. 6 isa schematic top view illustrating a touch display panel according tostill another embodiment of the disclosure. Specifically, FIG. 5corresponds to a cross-sectional line C-C′ of FIG. 6. Referring to FIGS.5 and 6, a touch display panel 100B is similar to the touch displaypanel 100. Therefore, like or corresponding components are referred towith like or corresponding reference symbols. The touch display panel100B mainly differs from the touch display panel 100 in that a firstbridge part 142B, an insulating pattern 192B, and a second bridge part152B of the touch display panel 100B are stacked differently from theway that the first bridge part 142, the insulating pattern 192, and thesecond bridge part 152 of the touch display panel 100 are stacked. Thefollowing descriptions mainly focus on the difference between the touchdisplay panel 100B and the touch display panel 100, and the same orcorresponding parts are referred to the foregoing descriptions.

Referring to FIGS. 5 and 6, the touch display panel 100B includes thefirst substrate 110, the OLED device layer 120, the spacer (orprotrusion) 130, the first touch electrode 140, the second touchelectrode 150, and the second substrate 160. The OLED device layer 120is disposed on the first substrate 110 and has the light emitting area120 a. The spacer (or protrusion) 130 is disposed on the OLED devicelayer 120 and located outside the light emitting area 120 a. The firsttouch electrode 140 and the second touch electrode 150 are disposed onthe OLED device layer 120. The OLED device layer 120, the spacer (orprotrusion) 130, the first touch electrode 140, and the second touchelectrode 150 are located between the first substrate 110 and the secondsubstrate 160. The first touch electrode 140 has the first bridge part142B and the first sensing parts 144. In addition, the first bridge part142B is electrically connected between two adjacent first sensing parts144. The second touch electrode 150 has the second bridge part 152B andthe second sensing parts 154. In addition, the second bridge part 152Bis electrically connected between two adjacent second sensing parts 154.The first bridge part 142B of the first touch electrode 140 is crossedwith the second bridge part 152B of the second touch electrode 150. Inthis embodiment, the first bridge part 142B may shield light, whereasthe first sensing part 144 and the second sensing part 154 may betransparent. However, the disclosure is not limited thereto.

What differs from the touch display panel 100 is that, in thisembodiment, the first bridge part 142B may be directly disposed on theencapsulation layer 190. The insulating pattern 192B covers a portion ofthe first bridge part 142B and exposes the two ends 142 a of the firstbridge part 142B. The first sensing parts 144, the second sensing parts154, and the second bridge part 152B are formed in the same transparentconductive layer. Two adjacent first sensing parts 144 respectivelycover the two ends 142 a of the first bridge part 142B. The secondsensing part 154 may be directly disposed on the encapsulation layer190. The second bridge part 152B is located on the insulating pattern192B. The touch display panel 100B and the touch display panel 100 havesimilar effects and advantages. Therefore, details in this regard willnot be repeated in the following.

FIG. 7 is a schematic cross-sectional view illustrating a touch displaypanel according to yet another embodiment of the disclosure. FIG. 8 is aschematic top view illustrating a touch display panel according to yetanother embodiment of the disclosure. Specifically, FIG. 7 correspondsto a cross-sectional line D-D′ of FIG. 8. Referring to FIGS. 7 and 8, atouch display panel 100C is similar to the touch display panel 100A.Therefore, like or corresponding components are referred to with like orcorresponding reference symbols. The touch display panel 100C mainlydiffers from the touch display panel 100A in that a first bridge part142C, a second bridge part 152C, and an insulating pattern 192C of thetouch display panel 100C are stacked differently from the way that thefirst bridge part 142, the second bridge part 152A, and the insulatingpattern 192 of the touch display panel 100A are stacked. The followingdescriptions mainly focus on the difference between the touch displaypanel 100C and the touch display panel 100, and the same orcorresponding parts are referred to the foregoing descriptions.

Referring to FIGS. 7 and 8, the touch display panel 100C includes thefirst substrate 110, the OLED device layer 120, the spacer (orprotrusion) 130, the first touch electrode 140, the second touchelectrode 150, and the second substrate 160. The OLED device layer 120is disposed on the first substrate 110 and has the light emitting area120 a. The spacer (or protrusion) 130 is disposed on the OLED devicelayer 120 and located outside the light emitting area 120 a. The firsttouch electrode 140 and the second touch electrode 150 are disposed onthe OLED device layer 120. The OLED device layer 120, the spacer (orprotrusion) 130, the first touch electrode 140, and the second touchelectrode 150 are located between the first substrate 110 and the secondsubstrate 160. The first touch electrode 140 has the first bridge part142C and the first sensing parts 144. In addition, the first bridge part142C is electrically connected between two adjacent first sensing parts144. The second touch electrode 150 has the second bridge part 152C andthe second sensing parts 154. In addition, the second bridge part 152Cis electrically connected between two adjacent second sensing parts 154.The first bridge part 142C of the first touch electrode 140 is crossedwith the second bridge part 152C of the second touch electrode 150. Inthis embodiment, the first bridge part 142C may shield light, whereasthe first sensing part 144 and the second sensing part 154 may betransparent. However, the disclosure is not limited thereto.

What differs from the touch display panel 100A is that, in thisembodiment, the first bridge part 142C is directly disposed on theencapsulation layer 190. An insulating pattern 192C covers a portion ofthe first bridge part 142C and exposes the two ends 142 a of the firstbridge part 142C. The first sensing parts 144 and the second sensingparts 154 are formed in the same transparent conductive layer. The firstsensing part 144 and the second sensing part 154 are disposed on theencapsulation layer 190. Two adjacent first sensing parts 144respectively cover the two ends 142 a of the first bridge part 142C. Thesecond bridge part 152 crosses the insulating pattern 192C toelectrically connect two adjacent first sensing parts 154. In thisembodiment, the second bridge part 152C may be transparent. However, thedisclosure is not limited thereto. The touch display panel 100C and thetouch display panel 100A have similar effects and advantages. Therefore,details in this regard will not be repeated in the following.

FIG. 9 is a schematic top view illustrating a touch display panelaccording to an embodiment of the disclosure. A touch display panel 100Dof FIG. 9 is similar to the touch display panel 100A. Therefore, like orcorresponding components are referred to with like or correspondingreference symbols. The touch display panel 100D mainly differs from thetouch display panel 100A in that at least one of the first bridge part142 and a second bridge part 152D shields light, and the at least onelight shielding component may be designed to be a plurality ofconductive patterns separated from each other. The followingdescriptions mainly focus on the difference between the touch displaypanel 100D and the touch display panel 100A, and the same orcorresponding parts are referred to the foregoing descriptions.

Referring to FIG. 9, the touch display panel 100D includes the firsttouch electrode 140 and the second touch electrode 150. The first touchelectrode 140 has the first bridge part 142 and the first sensing parts144. In addition, the first bridge part 142 is electrically connectedbetween two adjacent first sensing parts 144. The second touch electrode150 has the second bridge part 152D and the second sensing parts 154. Inaddition, the second bridge part 152D is electrically connected betweentwo adjacent second sensing parts 154. The first bridge part 142 of thefirst touch electrode 140 is crossed with the second bridge part 152D ofthe second touch electrode 150. What differs from the touch displaypanel 100A is that, in the embodiment of FIG. 9, at least one (e.g., thesecond bridge part 152D) of the first bridge part 142 and the secondbridge part 152D may be designed as a plurality of conductive patterns152D-1 separated from each other, so as to reduce the resistance of atleast one (e.g., the second bridge part 152D) of the first bridge part142 and the second bridge part 152D. More specifically, the conductivepatterns 152D-1 of the second bridge part 152D may be perpendicular tothe first bridge part 142. However, the disclosure is not limitedthereto. The touch display panel 100D and the touch display panel 100Ahave similar effects and advantages. Therefore, details in this regardwill not be repeated in the following.

FIG. 10 is a schematic top view illustrating a touch display panelaccording to another embodiment of the disclosure. A touch display panel100E of FIG. 10 is similar to the touch display panel 100C. Therefore,like or corresponding components are referred to with like orcorresponding reference symbols. The touch display panel 100E mainlydiffers from the touch display panel 100C in that at least one of thefirst bridge part 142C and a second bridge part 152E shields light, andthe at least one light shielding component may be designed to be aplurality of conductive patterns separated from each other. Thefollowing descriptions mainly focus on the difference between the touchdisplay panel 100E and the touch display panel 100C, and the same orcorresponding parts are referred to the foregoing descriptions.

Referring to FIG. 10, the touch display panel 100E includes the firsttouch electrode 140 and the second touch electrode 150. The first touchelectrode 140 has the first bridge part 142C and the first sensing parts144. In addition, the first bridge part 142 is electrically connectedbetween two adjacent first sensing parts 144. The second touch electrode150 has the second bridge part 152E and the second sensing parts 154. Inaddition, the second bridge part 152E is electrically connected betweentwo adjacent second sensing parts 154. The first bridge part 142C of thefirst touch electrode 140 is crossed with the second bridge part 152E ofthe second touch electrode 150. What differs from the touch displaypanel 100C is that, in the embodiment of FIG. 10, at least one (e.g.,the second bridge part 152E) of the first bridge part 142C and thesecond bridge part 152E may be designed as a plurality of conductivepatterns 152E-1 separated from each other, so as to reduce theresistance of at least one (e.g., the second bridge part 152E) of thefirst bridge part 142 and the second bridge part 152E. Morespecifically, the conductive pattern 152E1 of the second bridge part152E and the first bridge part 142C have acute angles θ. The touchdisplay panel 100E and the touch display panel 100C have similar effectsand advantages. Therefore, details in this regard will not be repeatedin the following.

FIG. 11 is a schematic top view illustrating a touch display panelaccording to still another embodiment of the disclosure. A touch displaypanel 100F of FIG. 11 is similar to the touch display panel 100A.Therefore, like or corresponding components are referred to with like orcorresponding reference symbols. The touch display panel 100F mainlydiffers from the touch display panel 100A in that at least one of thefirst bridge part 142 and a second bridge part 152F shields light, andthe at least one light shielding component (e.g., the second bridge part152F) may include an S-shaped pattern. The following descriptions mainlyfocus on the difference between the touch display panel 100F and thetouch display panel 100A, and the same or corresponding parts arereferred to the foregoing descriptions.

Referring to FIG. 11, the touch display panel 100F includes the firsttouch electrode 140 and the second touch electrode 150. The first touchelectrode 140 has the first bridge part 142 and the first sensing parts144. In addition, the first bridge part 142 is electrically connectedbetween two adjacent first sensing parts 144. The second touch electrode150 has a second bridge part 152F and the second sensing parts 154. Inaddition, the second bridge part 152F is electrically connected betweentwo adjacent second sensing parts 154. The first bridge part 142 of thefirst touch electrode 140 is crossed with the second bridge part 152F ofthe second touch electrode 150. What differs from the touch displaypanel 100A is that, in the embodiment of FIG. 11, at least one of thefirst bridge part 142 and the second bridge part 152F (e.g., the secondbridge part 152F) may be designed to be a bent pattern, so as to bypassthe light emitting area 120 a. The bent pattern may include a patternsubstantially similar to an S-shaped pattern. The S-shaped pattern(i.e., the second bridge part 152F) is away from the light emitting area120 a by a distance d in an arrangement direction of the light emittingarea. Besides, the insulating pattern 192 of the touch display panel100F may exceed the corresponding spacer (or protrusion) 130. However,the disclosure is not limited thereto. FIG. 12 is a schematic top viewillustrating a touch display panel according to yet another embodimentof the disclosure. In the embodiment of FIG. 12, an insulating pattern192G of a touch display panel 100G may not exceed the correspondingspacer (or protrusion) 130. In other words, from a top perspective,viewing toward a direction perpendicular to the first substrate 110, anorthogonal projection of the insulating pattern 192G on the firstsubstrate 110 may fall within an orthogonal projection of thecorresponding spacer (or protrusion) 130 on the first substrate 110. Thetouch display panels 100F and 100G and the touch display panel 100A havesimilar effects and advantages. Therefore, details in this regard willnot be repeated in the following.

FIG. 13 is a schematic top view illustrating a touch display panelaccording to an embodiment of the disclosure. A touch display panel 100Hof FIG. 13 is similar to the touch display panel 100C. Therefore, likeor corresponding components are referred to with like or correspondingreference symbols. The touch display panel 100H mainly differs from thetouch display panel 100C in that at least one of the first bridge part142C and a second bridge part 152H shields light, and the at least onelight shielding component (e.g., the second bridge part 152H) mayinclude an S-shaped pattern. The following descriptions mainly focus onthe difference between the touch display panel 100H and the touchdisplay panel 100C, and the same or corresponding parts are referred tothe foregoing descriptions.

Referring to FIG. 13, the touch display panel 100H includes the firsttouch electrode 140 and the second touch electrode 150. The first touchelectrode 140 has the first bridge part 142C and the first sensing parts144. In addition, the first bridge part 142C is electrically connectedbetween two adjacent first sensing parts 144. The second touch electrode150 has the second bridge part 152H and the second sensing parts 154. Inaddition, the second bridge part 152H is electrically connected betweentwo adjacent second sensing parts 154. The first bridge part 142C of thefirst touch electrode 140 is crossed with the second bridge part 152H ofthe second touch electrode 150. What differs from the touch displaypanel 100C is that, in the embodiment of FIG. 13, at least one of thefirst bridge part 142C and the second bridge part 152H (e.g., the secondbridge part 152H) may be designed to be a bent pattern, so as to bypassthe light emitting area 120 a. The bent pattern may include a patternsubstantially similar to an S-shaped pattern. Besides, the insulatingpattern 192 of the touch display panel 100H may exceed the correspondingspacer (or protrusion) 130. However, the disclosure is not limitedthereto. FIG. 14 is a schematic top view illustrating a touch displaypanel according to another embodiment of the disclosure. In theembodiment of FIG. 14, an insulating pattern 1921 of a touch displaypanel 100I may not exceed the corresponding spacer (or protrusion) 130.The touch display panels 100F and 100G and the touch display panel 100Ahave similar effects and advantages. Therefore, details in this regardwill not be repeated in the following.

FIG. 15 is a schematic top view illustrating a touch display panelaccording to still another embodiment of the disclosure. A touch displaypanel 100J of FIG. 15 is similar to the touch display panel 100C.Therefore, like or corresponding components are referred to with like orcorresponding reference symbols. The touch display panel 100J mainlydiffers from the touch display panel 100C in that at least one of thefirst bridge part 142C and a second bridge part 152J shields light, andthe at least one light shielding component (e.g., the second bridge part152J) may designed to be a zigzag line pattern. The followingdescriptions mainly focus on the difference between the touch displaypanel 100J and the touch display panel 100C, and the same orcorresponding parts are referred to the foregoing descriptions.

Referring to FIG. 15, the touch display panel 100J includes the firsttouch electrode 140 and the second touch electrode 150. The first touchelectrode 140 has the first bridge part 142C and the first sensing parts144. The first bridge part 142C is electrically connected between twoadjacent first sensing parts 144. The second touch electrode 150 has asecond bridge part 152J and the second sensing parts 154. The secondbridge part 152J is electrically connected between two adjacent secondsensing parts 154. The first bridge part 142C of the first touchelectrode 140 is crossed with the second bridge part 152J of the secondtouch electrode 150. What differs from the touch display panel 100C isthat, in the embodiment of FIG. 15, at least one of the first bridgepart 142C and the second bridge part 152J (e.g., the second bridge part152J) may be designed to be a zigzag line pattern, and the zigzag linepattern is away from the light emitting area 120 a by the distance d inthe arrangement direction of the light emitting area. The touch displaypanel 100J and the touch display panel 100C have similar effects andadvantages. Therefore, details in this regard will not be repeated inthe following.

FIG. 16 is a schematic top view illustrating a touch display panelaccording to yet another embodiment of the disclosure. A touch displaypanel 100K of FIG. 16 is similar to the touch display panel 100C.Therefore, like or corresponding components are referred to with like orcorresponding reference symbols. The touch display panel 100K mainlydiffers from the touch display panel 100C in that shapes of the firstsensing parts 144 and the second sensing parts 154 of the touch displaypanel 100C differ from shapes of first sensing parts 144K and secondsensing parts 154K of the touch display panel 100K. The followingdescriptions mainly focus on the difference between the touch displaypanel 100K and the touch display panel 100C, and the same orcorresponding parts are referred to the foregoing descriptions.

Referring to FIG. 16, the touch display panel 100K includes the firsttouch electrode 140 and the second touch electrode 150. The first touchelectrode 140 has the first bridge part 142C and the first sensing parts144K. The first bridge part 142C is electrically connected between twoadjacent first sensing parts 144K. The second touch electrode 150 hasthe second bridge part 152J and the second sensing parts 154K. Thesecond bridge part 152C is electrically connected between two adjacentsecond sensing parts 154K. The first bridge part 142C of the first touchelectrode 140 is crossed with the second bridge part 152C of the secondtouch electrode 150. What differs from the touch display panel 100C isthat, in the embodiment of FIG. 16, the first sensing parts 144K and thesecond sensing parts 154K may be optionally designed to be in a funnelshape, unlike the first sensing parts 144 and the second sensing parts154 that are designed to be in a rhombus shape. It should be noted that,whether the first sensing parts and the second sensing parts are in thefunnel shape or the rhombus shape, such shapes merely serve as examplesin the descriptions of the disclosure, instead of limitations to thedisclosure. The shape of the first sensing parts and the shape of thesecond sensing parts may be properly designed differently based onpractical needs. In this embodiment, the first bridge part 142C mayshield light, whereas the first sensing part 144K and the second sensingpart 154K may be transparent. However, the disclosure is not limitedthereto.

FIG. 17 is a schematic top view illustrating a touch display panelaccording to an embodiment of the disclosure. A touch display panel 100Lof FIG. 17 is similar to the touch display panel 100A. Therefore, likeor corresponding components are referred to with like or correspondingreference symbols. The touch display panel 100L mainly differs from thetouch display panel 100A in that shapes of first sensing parts 144L andsecond sensing parts 154L of the touch display panel 100L differ fromthe shapes of the first sensing parts 144 and the second sensing parts154 of the touch display panel 100A. The following descriptions mainlyfocus on the difference between the touch display panel 100L and thetouch display panel 100A, and the same or corresponding parts arereferred to the foregoing descriptions.

Referring to FIG. 17, the touch display panel 100L includes the firsttouch electrode 140 and the second touch electrode 150. The first touchelectrode 140 has the first bridge part 142 and the first sensing parts144L. The first bridge part 142 is electrically connected between twoadjacent first sensing parts 144L. The second touch electrode 150 hasthe second bridge part 152A and the second sensing parts 154L. Thesecond bridge part 152A is electrically connected between two adjacentsecond sensing parts 154L. The first bridge part 142 of the first touchelectrode 140 is crossed with the second bridge part 152A of the secondtouch electrode 150. What differs from the touch display panel 100A isthat, in the embodiment of FIG. 17, the first sensing parts 144L and thesecond sensing parts 154L may respectively have small locally protrudingareas 144 b and 154 b. Two ends of the first bridge part 142 arerespectively electrically connected with the small areas 144 b of twoadjacent first sensing parts 144L. Two ends of the second bridge part152A are respectively electrically connected with the small areas 154 bof two adjacent second sensing parts 154L. Accordingly, lengths of thefirst bridge part 142 and the second bridge part 152A are able to bereduced, so as to reduce the resistances of the first touch electrode140 and the second touch electrode 150. In this embodiment, the firstbridge part 142 may shield light, whereas the first sensing part 144Land the second sensing part 154L may be transparent. However, thedisclosure is not limited thereto.

In view of the foregoing, the first bridge part adopted in the touchdisplay panel according to an embodiment of the disclosure iselectrically connected with two adjacent first sensing parts. The firstsensing parts and the first bridge part are serially connected to formthe first touch electrode. The first bridge part has a low resistancerate. Therefore, the first touch electrode has a low resistance, so thetouch performance of the touch display panel is able to be facilitated.More importantly, the first bridge part is disposed on the spacer (orprotrusion) outside the light emitting area. Therefore, the first bridgepart does not overly affect the brightness of the touch display panel,and the touch display panel may exhibit preferable touch and displayproperties.

It will be apparent to those skilled in the art that variousmodifications and variations can be made to the structure of thedisclosure without departing from the scope or spirit of the disclosure.In view of the foregoing, it is intended that the disclosure coversmodifications and variations of this disclosure provided they fallwithin the scope of the following claims and their equivalents.

What is claimed is:
 1. A touch display panel, comprising: a firstsubstrate; a first display electrode, disposed on the first substrate; aspacer, disposed on the first substrate; and a first touch electrode,disposed on the first substrate, wherein the first touch electrode has afirst bridge part, and at least a portion of the first bridge part isoverlapped with the spacer from a top view.
 2. The touch display panelas claimed in claim 1, further comprising two adjacent light emittingareas, wherein at least a portion of the spacer is disposed between thetwo adjacent light emitting areas, and the two adjacent light emittingareas emit light beams in a same color.
 3. The touch display panel asclaimed in claim 2, wherein the two adjacent light emitting areas emitthe light beams in green.
 4. The touch display panel as claimed in claim2, wherein a portion of the first bridge part is disposed between thetwo adjacent light emitting areas.
 5. The touch display panel as claimedin claim 4, wherein the portion of the first bridge part is away fromthe two adjacent light emitting areas by a distance.
 6. The touchdisplay panel as claimed in claim 1, further comprising a plurality oflight emitting areas, wherein the plurality of light emitting areas emitlight beams in a same color, the plurality of light emitting areas aredisposed side by side and arranged in a direction, and the spacer isarranged in the direction.
 7. The touch display panel as claimed inclaim 6, wherein the plurality of light emitting areas emit the lightbeams in green.
 8. The touch display panel as claimed in claim 1,wherein the first touch electrode further comprises a plurality of firstsensing parts, and the first bridge part is electrically connectedbetween two adjacent first sensing parts.
 9. The touch display panel asclaimed in claim 8, further comprising: a second touch electrodedisposed on the first substrate, wherein the second touch electrodecomprises a plurality of second sensing parts and a second bridge part,the second bridge part is electrically connected between two adjacentsecond sensing parts, and the first bridge part is crossed with thesecond bridge part.
 10. The touch display panel as claimed in claim 9,further comprising: an insulating pattern, wherein the first sensingparts, the second sensing parts, and the second bridge part are disposedon the first display electrode, and the insulating pattern is disposedbetween the second bridge part and the first bridge part.
 11. The touchdisplay panel as claimed in claim 9, wherein at least a portion of thesecond touch electrode is overlapped with the spacer from the top view.12. The touch display panel as claimed in claim 11, further comprising:an insulating pattern, wherein the insulating pattern is overlapped withat least a portion of the second touch electrode from the top view. 13.The touch display panel as claimed in claim 9, further comprising alight emitting area, wherein at least one of the first bridge part andthe second bridge part comprises a bent pattern, and the bent pattern isaway from the light emitting area by a distance.
 14. The touch displaypanel as claimed in claim 8, further comprising: an insulating pattern,wherein from the top view, the insulating pattern is overlapped with atleast a portion of the first bridge part, and the two adjacent firstsensing parts are partially overlapped with two ends of the first bridgepart.
 15. The touch display panel as claimed in claim 8, wherein an endof the first bridge part is in an arc shape.
 16. The touch display panelas claimed in claim 8, further comprising: a second touch electrode,disposed on the first substrate, wherein the second touch electrodecomprises a second bridge part, at least one of the first bridge partand the second bridge part comprises a plurality of conductive patternsseparated from each other.
 17. The touch display panel as claimed inclaim 1, further comprising: an encapsulation layer, covering the firstdisplay electrode, wherein the first touch electrode is disposed on theencapsulation layer.
 18. The touch display panel as claimed in claim 1,further comprising: a second display electrode, wherein the seconddisplay electrode covers the first display electrode.